Curtiss-Wright / DY-4 IP4-206-020 Digital Opto I/O IndustryPack Module

The Curtiss-Wright/DY-4 IP4-206-020 is a digital opto I/O IndustryPack module that delivers optically isolated signal interfacing for embedded systems operating in harsh industrial environments. The module provides 16 optically isolated channels configurable as either inputs or outputs, plus 24 dedicated input-only channels, enabling flexible I/O architecture for complex control and monitoring applications.

Technical Specifications

Module Type: IndustryPack Module

Manufacturer: Curtiss-Wright / DY-4

Model: IP4-206-020

I/O Architecture: 16 optically isolated bidirectional channels; 24 input-only channels

Buffering: Double-buffered transmitters and receivers

Interrupt Latching: Edge-sensitive with programmable polarity

Output Synchronization: External clock input for simultaneous output register updates

Environmental Protection: Designed for harsh environments and industrial applications; conformal coating available

Key Features

Each input channel generates interrupts with event latching to prevent data loss

Programmable edge sensitivity and interrupt polarity control

External clock capability enables coordinated multi-channel output transitions

Optical isolation provides galvanic separation between logic and field circuits

Double-buffered design eliminates race conditions in transmit and receive paths

Typical Applications Process automation, machinery control, industrial sensor networks, and distributed I/O in embedded systems requiring noise immunity and signal isolation. The configurable channel architecture suits both high-channel-count input scenarios and mixed input/output control requirements.

Compatibility & Integration The IP4-206-020 integrates into VME, CompactPCI, PCI, and PCI Express carrier systems via the IndustryPack standard interface. Third-party suppliers maintain availability of documentation and technical resources.